Last updated: June 24, 2025
In Vermillion, United States, the average temperature in December hovers around -2°C (28°F), with a chilly minimum dipping to -24°C (-11°F) and a surprisingly warm maximum reaching 18°C (64°F). Expect about 42 mm (1.6 in) of precipitation spread over 4 days, while humidity levels remain high at an average of 83%.
In December in Vermillion, the average temperature is -2°C (28°F). Maximums can reach 18°C (64°F) and minimums can drop as low as -24°C (-11°F). Travelers should be prepared for a wide range of temperatures and dress accordingly, ensuring they enjoy their visit to Vermillion comfortably.
In Vermillion in December, the precipitation amount is 42 mm (1.6 in) spread over a period of 4 days.
In Vermillion in December, humidity is 83%. With an average temperature of -2°C (28°F), this humidity feels like a biting chill that penetrates your clothes, making outdoor activities uncomfortable and travel challenging.
In Vermillion in December, the maximum UV index is 2, which corresponds to a low exposure category. With this level of UV radiation, the time to burn is approximately 45 minutes. To learn more about the hourly UV index in Vermillion, you can visit Hourly UV Index in Vermillion.
UV Risk Categories
Weather in Vermillion varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Vermillion, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -5°C (23°F) | 25 mm (1.0 inches) | 80% | moderate |
| February Weather | -5°C (22°F) | 26 mm (1.0 inches) | 84% | moderate |
| March Weather | 3°C (38°F) | 79 mm (3.1 inches) | 75% | high |
| April Weather | 8°C (47°F) | 85 mm (3.3 inches) | 79% | very high |
| May Weather | 16°C (60°F) | 148 mm (5.8 inches) | 74% | very high |
| June Weather | 23°C (74°F) | 94 mm (3.7 inches) | 81% | extreme |
| July Weather | 25°C (77°F) | 82 mm (3.2 inches) | 82% | very high |
| August Weather | 23°C (73°F) | 93 mm (3.7 inches) | 80% | very high |
| September Weather | 20°C (68°F) | 85 mm (3.3 inches) | 75% | very high |
| October Weather | 10°C (50°F) | 76 mm (3.0 inches) | 77% | moderate |
| November Weather | 3°C (37°F) | 23 mm (0.9 inches) | 85% | moderate |
| December Weather | -2°C (28°F) | 42 mm (1.6 inches) | 83% | low |